The title complex, [PdCl2(C18H15P)2]·0.5C6H6, has the PdII ion in a square-planar coordination mode (r.m.s. deviation for Pd, P and Cl atoms = 0.024 Å) with the PPh3 and Cl ligands mutually trans. The benzene solvent mol­ecule is located about a crystallographic inversion centre. The title complex is isostructural with trans-dichloridobis(triphenyl­phosphane)­palladium(II) 1,4-dichloro­benzene sesquisolvate [Kitano et al. (1983 [triangle]). Acta Cryst. C39, 1015–1017].

Mol­ecules of the title compound, [HgBr(C9H11)], are located on a crystallographic twofold rotation axis. Due to the mol­ecular symmetry, the HgII atom is linearly coordinated by the ipso-C of the mesityl group and the Br atom. In the crystal, mol­ecules lie in planes parallel to (001).